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Maintaining the Switch Fabric Board (SFB)

 

Purpose

For optimum router performance, verify the condition of the SFBs.

Action

On a regular basis:

  • Check the LED on the SFB faceplate.

    During normal operations:

    • The bi-color OK/FAIL LED on the SFB faceplate is lit green steadily.

    • The bi-color OK/FAIL LED on the SFB faceplate is blinking green.

    • The bi-color OK/FAIL red LED on the SFB faceplate is off.

  • Issue the show chassis sfb command to display information about the SFBs. The output is similar to the following:

user@host> show chassis sfb

For further description of the output from the commands, see the Junos OS System Basics and Services Command Reference  .